A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5895-00-303-8061
NSN 6645-01-514-7403
NSN 4140-01-211-3959
NSN 6145-01-151-2823
NSN 5905-01-507-4880
NSN 5945-00-661-0506
NSN 4140-01-384-4143
NSN 5915-01-019-6598
NSN 5975-01-436-3622
NSN 5910-00-581-9843
NSN 6685-00-204-6037
NSN 6620-01-406-3584